f4c1258d56
Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03
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// <string>
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// ~basic_string() // implied noexcept;
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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#include "test_allocator.h"
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template <class T>
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struct throwing_alloc
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{
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typedef T value_type;
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throwing_alloc(const throwing_alloc&);
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T *allocate(size_t);
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~throwing_alloc() noexcept(false);
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};
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// Test that it's possible to take the address of basic_string's destructors
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// by creating globals which will register their destructors with cxa_atexit.
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std::string s;
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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std::wstring ws;
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#endif
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int main(int, char**)
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{
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{
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typedef std::string C;
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static_assert(std::is_nothrow_destructible<C>::value, "");
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}
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{
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typedef std::basic_string<char, std::char_traits<char>, test_allocator<char>> C;
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static_assert(std::is_nothrow_destructible<C>::value, "");
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}
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#if defined(_LIBCPP_VERSION)
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{
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typedef std::basic_string<char, std::char_traits<char>, throwing_alloc<char>> C;
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static_assert(!std::is_nothrow_destructible<C>::value, "");
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}
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#endif // _LIBCPP_VERSION
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return 0;
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}
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